<?php
class Error_ErrorController extends Zend_Controller_Action{
	   public function errorAction()
    {
        $errors = $this->_getParam('error_handler'); // kiểm tra xem có lỗi không ; _getParam('error_handler') trả về mảng object
        
        if (!$errors || !$errors instanceof ArrayObject) { //Nếu $error không hợp quy định thì trả lại thông báo khác
            $this->view->message = 'You have reached the error page';
            return;
        }
        switch ($errors->type) {
            case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_ROUTE: // error: indicating no route matched
            case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_CONTROLLER:// indicating the controller was not found
            case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_ACTION: // indicating the requested action was not found
                // 404 error -- controller or action not found
                $this->getResponse()->setHttpResponseCode(404); //value response of sever is seted 404 (not found)
                $priority = Zend_Log::NOTICE;
                $this->view->message = 'Page not found';
                break;
            default:
                // application error
                $this->getResponse()->setHttpResponseCode(500);
                $priority = Zend_Log::CRIT; // các giá trị của ZendLog này có ý nghĩa gì : NOTICE, CRIT
                $this->view->message = 'Application error';
                break;
        }
        // Log exception, if logger available
        if ($log = $this->getLog()) {
            $log->log($this->view->message, $priority, $errors->exception);
            $log->log('Request Parameters', $priority, $errors->request->getParams());
        }
        // conditionally display exceptions
       /* $resources = $this->getOption('resources'); 
        var_dump($resources[frontController][params][displayExceptions]);*/
        if ($this->getInvokeArg('displayExceptions') == true) { //getInvokeArg : nhằm kiểm tra resources trong file application.ini ta có resources display exception = 1 => true
            $this->view->exception = $errors->exception;
        }
        $this->view->request   = $errors->request;
    }
    public function getLog()
    {
        $bootstrap = $this->getInvokeArg('bootstrap');
        if (!$bootstrap->hasResource('Log')) {
            return false;
        }
        $log = $bootstrap->getResource('Log');
        return $log;
    }
}